Make tiled renderer and QGeoProjectionWebMercator debuggable

This patch introduces a new macro, QT_LOCATION_DEBUG, that, when
fed via qmake command line, changes the scope of some members,
adds some extra members and some extra data dumping into these
members.
In this way external code can inspect the state of the renderer
in order to debug it.

The patch also moves a few classes into separate files, as well
as privately exporting them.

Change-Id: I32a042863f78dcd10f94b0b7fe8b90f3fc486891
Reviewed-by: Paolo Angelelli <paolo.angelelli@qt.io>

1 files changed, 8 insertions, 2 deletions

diff --git a/src/location/declarativemaps/qdeclarativepolylinemapitem.cpp b/src/location/declarativemaps/qdeclarativepolylinemapitem.cpp
index aeb7b718..2fb3098d 100644
--- a/src/location/declarativemaps/qdeclarativepolylinemapitem.cpp
+++ b/src/location/declarativemaps/qdeclarativepolylinemapitem.cpp
@@ -398,6 +398,10 @@ QList<QList<QDoubleVector2D> > QGeoMapPolylineGeometry::clipPath(const QGeoMap &
         wrappedPath.append(wrappedProjection);
     }
 
+#ifdef QT_LOCATION_DEBUG
+    m_wrappedPath = wrappedPath;
+#endif
+
     // 2)
     QList<QList<QDoubleVector2D> > clippedPaths;
     const QList<QDoubleVector2D> &visibleRegion = p.projectableGeometry();
@@ -428,6 +432,10 @@ QList<QList<QDoubleVector2D> > QGeoMapPolylineGeometry::clipPath(const QGeoMap &
         clippedPaths.append(wrappedPath);
     }
 
+#ifdef QT_LOCATION_DEBUG
+    m_clippedPaths = clippedPaths;
+#endif
+
     return clippedPaths;
 }
 
@@ -441,14 +449,12 @@ void QGeoMapPolylineGeometry::pathToScreen(const QGeoMap &map,
     double minY = qInf();
     double maxX = -qInf();
     double maxY = -qInf();
-
     srcOrigin_ = p.mapProjectionToGeo(p.unwrapMapProjection(leftBoundWrapped));
     QDoubleVector2D origin = p.wrappedMapProjectionToItemPosition(leftBoundWrapped);
     for (const QList<QDoubleVector2D> &path: clippedPaths) {
         QDoubleVector2D lastAddedPoint;
         for (int i = 0; i < path.size(); ++i) {
             QDoubleVector2D point = p.wrappedMapProjectionToItemPosition(path.at(i));
-
             point = point - origin; // (0,0) if point == geoLeftBound_
 
             minX = qMin(point.x(), minX);